You are watching a rat in a Skinner box, and every time a red light comes on the rat presses the lever in the box. However, when a green light comes on the rat never presses the lever. In this case, it appears that the color of the light is acting as
A) a positive reinforcer for bar pressing.
B) a negative reinforcer for bar pressing.
C) an unconditioned stimulus for bar pressing.
D) a discriminative stimulus for bar pressing.

Question

Quizplus · Accepted Answer

The fact that the rat only presses the lever when the red light comes on and not when the green light comes on suggests that the color of the light is acting as a discriminative stimulus for bar pressing. The rat has learned to discriminate between the two colors of light and only responds when the specific stimulus is presented.

You Are Watching a Rat in a Skinner Box, and Every